{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-54364 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2025-54364 yet. Limit exposure of the affected software until one is available.","what":"CVE-2025-54364 is a medium-severity denial of service vulnerability in Microsoft Knack, published on 20 Aug 2025. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-54364 and fix it if it is affected.\n\nWhat it is: CVE-2025-54364 is a medium-severity denial of service vulnerability in Microsoft Knack, published on 20 Aug 2025. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2025-54364 in the wild and no public exploit code.\n\nAffected product: Microsoft Knack. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2025-54364/ (Markdown: https://insights.sbomify.com/CVE-2025-54364/index.md)","id":"CVE-2025-54364","markdown":"https://insights.sbomify.com/CVE-2025-54364/index.md","name":"CVE-2025-54364","record":{"aliases":["DEBIAN-CVE-2025-54364","UBUNTU-CVE-2025-54364"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Python CLI library","requires_auth":"none","summary":"An attacker can cause excessive CPU consumption and denial of service in applications using Microsoft Knack by injecting crafted docstrings that trigger catastrophic backtracking in regular expressions.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[],"cvss":{"score":6.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-1333","name":"Inefficient Regular Expression Complexity"}],"description":"Microsoft Knack 0.12.0 allows Regular expression Denial of Service (ReDoS) in the knack.introspection module. option_descriptions employs an inefficient regular expression pattern: \"\\s(:param)\\s+(.+?)\\s:(.*)\" that is susceptible to catastrophic backtracking when processing crafted docstrings containing a large volume of whitespace without a terminating colon. An attacker who can control or inject docstring content into affected applications can trigger excessive CPU consumption. This software is used by Azure CLI.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Denial of service in Knack","id":"CVE-2025-54364","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2025"},"n_packages":0,"n_references":2,"next":{"headline":"fastapi-guard patch contains bypassable RegEx","id":"CVE-2025-54365"},"packages":[],"prev":{"headline":"Denial of service in Knack","id":"CVE-2025-54363"},"products":["Knack"],"published":"2025-08-20","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-08-26","vendors":["Microsoft"]},"summary":"An attacker can cause excessive CPU consumption and denial of service in applications using Microsoft Knack by injecting crafted docstrings that trigger catastrophic backtracking in regular expressions.","url":"https://insights.sbomify.com/CVE-2025-54364/"}